The Accounts Preferences implementation in Apple Mac OS X 10.6 before 10.6.3, when a network account server is used, does not support Login Window access control that is based solely on group membership, which allows attackers to bypass intended access restrictions by entering login credentials.

SFLServer in OS Services in Apple Mac OS X before 10.6.3 allows local users to gain privileges via vectors related to use of wheel group membership during access to the home directories of user accounts.

Mail in Apple Mac OS X before 10.6.3 does not disable the filter rules associated with a deleted mail account, which has unspecified impact and attack vectors.

Buffer overflow in Image RAW in Apple Mac OS X before 10.6.3 allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via a crafted PEF image.

Heap-based buffer overflow in ImageIO in Apple Mac OS X before 10.6.3 allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via a crafted JP2 (JPEG2000) image, related to incorrect calculation and the CGImageReadGetBytesAtOffset function.

Event Monitor in Apple Mac OS X before 10.6.3 does not properly validate hostnames of SSH clients, which allows remote attackers to cause a denial of service (arbitrary client blacklisting) via a crafted DNS PTR record, related to a "plist injection issue."

Directory Services in Apple Mac OS X before 10.6.3 does not properly perform authorization during processing of record names, which allows local users to gain privileges via unspecified vectors.

Disk Images in Apple Mac OS X before 10.6.3 does not provide the expected warning for an unsafe file type in an internet enabled disk image, which makes it easier for user-assisted remote attackers to execute arbitrary code via a package file type.

Disk Images in Apple Mac OS X before 10.6.3 allows user-assisted remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted disk image with bzip2 compression.

DesktopServices in Apple Mac OS X 10.6 before 10.6.3 preserves file ownership during an authenticated Finder copy, which might allow local users to bypass intended disk-quota restrictions and have unspecified other impact by copying files owned by other users.

Incomplete blacklist vulnerability in CoreTypes in Apple Mac OS X before 10.6.3 makes it easier for user-assisted remote attackers to execute arbitrary JavaScript via a web page that offers a download with a Content-Type value that is not on the list of possibly unsafe content types for Safari, as demonstrated by the values for the (1) .ibplugin and (2) .url extensions.

Heap-based buffer overflow in quicktime.qts in CoreMedia and QuickTime in Apple Mac OS X before 10.6.3 allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via a malformed .3g2 movie file with H.263 encoding that triggers an incorrect buffer length calculation.

CoreAudio in Apple Mac OS X before 10.6.3 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via crafted audio content with QDMC encoding.

Directory traversal vulnerability in AFP Server in Apple Mac OS X before 10.6.3 allows remote attackers to list a share root's parent directory, and read and modify files in that directory, via unspecified vectors.

CoreAudio in Apple Mac OS X before 10.6.3 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via crafted audio content with QDM2 encoding, which triggers a buffer overflow due to inconsistent length fields, related to QDCA.

AFP Server in Apple Mac OS X before 10.6.3 does not prevent guest use of AFP shares when guest access is disabled, which allows remote attackers to bypass intended access restrictions via a mount request.

Unspecified vulnerability in Safari 4 on Apple Mac OS X 10.6 allows remote attackers to execute arbitrary code via unknown vectors, as demonstrated by Charlie Miller during a Pwn2Own competition at CanSecWest 2010.

Use-after-free vulnerability in WebKit in Apple Safari before 5.0 on Mac OS X 10.5 through 10.6 and Windows, Safari before 4.1 on Mac OS X 10.4, and Safari on Apple iPhone OS allows remote attackers to execute arbitrary code or cause a denial of service (application crash), or read the SMS database or other data, via vectors related to "attribute manipulation," as demonstrated by Vincenzo Iozzo and Ralf Philipp Weinmann during a Pwn2Own competition at CanSecWest 2010.

Use-after-free vulnerability in the abstract file-descriptor handling interface in the cupsdDoSelect function in scheduler/select.c in the scheduler in cupsd in CUPS before 1.4.4, when kqueue or epoll is used, allows remote attackers to cause a denial of service (daemon crash or hang) via a client disconnection during listing of a large number of print jobs, related to improperly maintaining a reference count. NOTE: some of these details are obtained from third party information. NOTE: this vulnerability exists because of an incomplete fix for CVE-2009-3553.

The png_decompress_chunk function in pngrutil.c in libpng 1.0.x before 1.0.53, 1.2.x before 1.2.43, and 1.4.x before 1.4.1 does not properly handle compressed ancillary-chunk data that has a disproportionately large uncompressed representation, which allows remote attackers to cause a denial of service (memory and CPU consumption, and application hang) via a crafted PNG file, as demonstrated by use of the deflate compression method on data composed of many occurrences of the same character, related to a "decompression bomb" attack.